Modeling and Analysis of Microgrid Energy Scheduling Based on Colored Petri Net

Colored Petri nets (CPN) can be used to model and study systems with discrete, asynchronous, and concurrent behaviors. Microgrid systems have these features, that can be modeled and studied by CPN. In this paper, the energy scheduling between various distributed power sources and users in a microgrid system is studied based on the analysis of working characteristics of wind turbines, photovoltaic arrays and flexible loads. A CPN model of a microgrid system including distributed power generations is established, which can realize the functions of scheduling energy generated by distributed power generators in the microgrid system and interacting with the external power grid. Owing to the modular and hierarchical modeling method, the proposed model can be conveniently expanded in the scale and function as required, which has universality and adaptability. Finally, the theoretical significance and practical values of the established model are demonstrated by the system simulation.